Complex phase behavior induced by repulsive interactions

被引:55
作者
Velasco, E [1 ]
Mederos, L
Navascués, G
Hemmer, PC
Stell, G
机构
[1] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[3] NTNU, Inst Fys, N-7491 Trondheim, Norway
[4] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
关键词
D O I
10.1103/PhysRevLett.85.122
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
For a solid in which the interactions have a hard core plus a simple soft repulsive tail we show, using a perturbation theory, that the possible stable crystalline structures give rise to a rich phase behavior. We find two concomitant critical points each corresponding to phase transitions separating bce and fee structures. respectively. and the occurrence of a transition between fee and bce phases without change in density. This novel phenomenology may be relevant to the behavior of some metallic systems, colloids, and to water.
引用
收藏
页码:122 / 125
页数:4
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